Olivia Mora was arraigned Wednesday in Dorchester District Court on charges including drunken driving and motor vehicle homicide.

Wednesday morning, the father of Brianna Rosales wept at the spot his daughter was killed.

Balmore Vasquez said she loved helping to take care of her brothers and loved to go to school.

“How can you take a life? How can you take a 7-year-old girl’s life? Put her away for a long time,” Vasquez told WBZ NewsRadio 1030’s Carl Stevens. “She shouldn’t even step outside and be free.”

Police say the 36-year-old Mora’s SUV was speeding down a Boston street at about 2:15 p.m. Tuesday, struck a parked vehicle, jumped the curb, and knocked over a hydrant before striking the girl and her mother while they walked along the sidewalk.

The girl’s mother, severely hurt, came out of surgery Wednesday morning but Vasquez says he still hasn’t figured out a way to tell her that Brianna has died.

“She just got out of surgery, I don’t know how to tell her the bad news,” Vasquez said.

Police say Mora lived in Boston, but the corporate logo on her SUV indicated that she worked for a company in Concord, N.H.